SynTherm® – Insulating Materials SynTherm® P

SynTherm® P is a flexible polyester film based on polyethylene terephthalate. With increasing thickness the film appears to be cloudy or milky white.

With its excellent balance of electrical properties SynTherm® P offers many constructional possibilities for the electrical industry. It is suitable for use in a temperature range from -40 °C to +140 °C short-term.

 

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Application

Polyester film SynTherm® P is suitable for systems up to 130 °C. It is used in motor and generator engineering as wedge and for slot insulation or phase insulation. In transformers, chokes and relays it is often used as core, layer or final insulation.

Standards

  • RoHS compliant acc. to 2011/65/EU

Delivery forms

Film thickness in μm:
23, 36, 50, 75, 100, 125, 190, 250, 300, 350
(further thicknesses on request)

SynTherm® P is available:

  • tapes as of 6 mm width
  • rolls up to 1,000 mm width

Feathering:

  • depth approx. 1 - 12 mm, distance approx. 1 - 10 mm
  • as of 10 mm up to 240 mm width of tape,

material thickness on request

Base

PET

Technical data

Mechanical
Property Unit of measure
Total thickness µm 23 36 50 75 100 125 190 250 300 350
Specific weight g/m² 32.2 50.4 70 105 140 175 266 350 420 490
Tensile strength longitudinal N/mm² 196 196 186 186 176 176 176 176 166 166
Tensile strength transversal N/mm² 196 196 186 186 176 176 176 176 166 166
Elongation at break longitudinal % 130 130 140 140 140 140 150 150 150 150
Elongation at break transversal % 120 120 130 130 130 130 140 140 140 140
Shrinkage (30 min at 150 °C) longitudinal % 1.8 1.6 1.6 1.4 1.2 1.2 1.2 1.2 1.2 1.2
Shrinkage (30 min at 150 °C) transversal % 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Electrical
Property Unit of measure
Total thickness µm 23 36 50 75 100 125 190 250 300 350
Dielectric strength kV 4.5 7.5 9.5 12.5 14 17 20 22 24 26